# Gemini 3 Deep Think vs GPT-5 Pro

> GPT-5 Pro has enough public results to be ranked (#58); Gemini 3 Deep Think does not yet, so treat this comparison as directional.

- Canonical page: https://noometry.com/compare/gemini-3-deep-think-vs-gpt-5-pro
- Last updated: 2026-10-10
- Shared benchmarks: 2

## Summary

- They share 2 benchmarks with published results for both. Gemini 3 Deep Think scores higher in 1 category and GPT-5 Pro in 0 categories; one gap is clear of the uncertainty.
- The widest gap is in reasoning, where Gemini 3 Deep Think leads 70.8 to 39.2.
- The biggest single-benchmark swing is ARC-AGI-2: 84.6% for Gemini 3 Deep Think and 18.3% for GPT-5 Pro.

## Snapshot

| | Gemini 3 Deep Think | GPT-5 Pro |
|---|---|---|
| Provider | Google | OpenAI |
| Noometry Index | 58.5 | 46.2 |
| Rank | — | 58 |
| Context | — | 400K |
| Input $/M | — | $15 |
| Output $/M | — | $120 |
| Weights | Proprietary | Proprietary |

## Coding

- Gemini 3 Deep Think: —
- GPT-5 Pro: 43.4 (#77)

| Benchmark | Gemini 3 Deep Think | GPT-5 Pro |
|---|---|---|
| WeirdML | — | 60.4% |
| AlgoTune | — | 1.31 |

## Reasoning

- Gemini 3 Deep Think: 70.8 (#11)
- GPT-5 Pro: 39.2 (#52)

| Benchmark | Gemini 3 Deep Think | GPT-5 Pro |
|---|---|---|
| ARC-AGI-2 | 84.6% | 18.3% |
| ARC-AGI-1 | 96% | 70.2% |
| SimpleBench | — | 61.6% |
| Kagi LLM Benchmark | — | 76.8% |
| CritPt | 25.7% | — |
| EnigmaEval | — | 18.8% |
| Epoch Capabilities Index | — | 150.26 |

## Math

- Gemini 3 Deep Think: —
- GPT-5 Pro: 48.0 (#53)

| Benchmark | Gemini 3 Deep Think | GPT-5 Pro |
|---|---|---|
| FrontierMath (Tiers 1-3) | — | 55.8% |
| FrontierMath Tier 4 | — | 19.5% |
| FrontierMath Tier 4 (v1) | — | 14.6% |

## Knowledge

- Gemini 3 Deep Think: —
- GPT-5 Pro: 56.2 (#39)

| Benchmark | Gemini 3 Deep Think | GPT-5 Pro |
|---|---|---|
| Humanity's Last Exam | — | 31.6% |

## FAQ

### Is Gemini 3 Deep Think better than GPT-5 Pro?

GPT-5 Pro has enough public results to be ranked (#58); Gemini 3 Deep Think does not yet, so treat this comparison as directional.

### How many benchmarks do Gemini 3 Deep Think and GPT-5 Pro share?

2 benchmarks have published results for both models. Gemini 3 Deep Think has 3 scored results on Noometry and GPT-5 Pro has 12.